ATI 6 Channel Amplifier 4 Ohm 270W 8-Ohm 180W

ATI 6 Channel Amplifier 4 Ohm 270W 8-Ohm 180W
Product Code: ATI-AT1807
Availability: In Stock
Price: $3,813.00
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Here's another great chance to own an ATI amplifier at a greatly reduced price!

Designed by legendary amplifier engineer Morris Kessler, ATI’s 1800 series is our best single-ended lineup. Available with 2 to 7 channels, the 1800 series is conservatively rated at 180 watts RMS into 8 ohms from 20 Hz to 20 kHz with less than 0.03% THD and IMD and with 270 watts RMS into 4 ohms with the same conditions. Signal to noise ratio exceeds 120 dB at full rated output which is why audiophiles consider ATI amps to be dead silent during use. Based simply on measurements, we could easily have rated the amplifier at 210 watts RMS per channel at 8 ohms, but then, we are conservative.

All 1800 series amps have dual toroidal power transformers, 22,400 microfarads of capacitance per channel in the power supply and monoblock construction with everything except the transformer on a single PCB. Other features making it installer-friendly are: a detachable IEC power cord, optically coupled protection circuits, soft-start circuit and convection cooling eliminating the need for fans.

This 1807 model is considered to be "B" stock by Amplifier Technologies and has minor cosmetic flaws. In any case the unit is electrically perfect and meets all performance specifications. Plus, and this is important, it carries the full manufacturer's 7-year warranty. Please navigate to ATI's new web site. ( for full details. This AT1807 - like all ATI products - is made in the USA.


Remote Trigger: Activated from 3.3VDC to 24 VDC via a heavy-duty relay
Protection Circuits: Optically –coupled with full automatic reset.
Toroid Transformers: 40% more efficient than EI type. Separate bi-filar windings for each channel guaranty lower noise and crosstalk.
Circuit Boards: Double-sided, FR-4 glass-epoxy, computer-grade boards are assembled in-house.
Soft Start Circuitry: Ultra soft turn on reduces in-rush current to a minimum. Multiple units can be turned on without tripping circuit breakers eliminating the need for sequencing.
Power Transistors: High-current, bi-polar output transistors with active bias circuits result in effortless operation.
Power Cord: Detachable, 3-wire cord.
7-Year Warranty Parts and labor against defects in parts or workmanship.

17"w X 7"h X 16"d (chassis)
weight - 50 to 93lbs (model dependent)


Free Shipping on all orders above $200.00 to the following cities located in Ontario Canada:

Toronto, GTA, Woodbridge, Mississauga, Kleinburg, Vaughan, King City, Scarborough, Oakville, Brampton, North York, Brantford, Bradford, Toronto, Vauhgan, Cookstown, Barrie, Wasaga Beach, Aurora,Toronto, Vaughan, Newmarket, Etobicoke, Maple, Thornhill, Richmond Hill, Markham, Oshawa, Pickering, Whitby

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